Code Definition

B1918 — Airbag Memory Clear Circuit Open

System: Body  |  Type: Manufacturer-Specific  |  Make: Ford

About B1918

B1918 is a manufacturer-specific body diagnostic trouble code recorded for Ford vehicles. It belongs to the B-prefix family of codes, which covers body, interior, airbag, or comfort-electronics faults.

When B1918 is stored, the module has detected an open (broken or disconnected) electrical path in the monitored circuit.

Scanning & clearing: Body (B) codes are often stored in the body control module, airbag module, or climate module. A basic OBD-II tool usually will not read body codes — an enhanced or OEM-level scan tool is typically required.

B1918 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

DTC B1918 indicates that the Restraint Control Module (RCM, called the Diagnostic Monitor on earlier Ford SRS platforms) has detected an open circuit condition on the memory clear input. The memory clear circuit is an external signal path used by Ford service tooling and on some platforms by an internal latched input to acknowledge that a stored fault or crash event has been addressed; it allows the RCM to clear non volatile memory and extinguish the airbag warning lamp under controlled conditions. The RCM performs a continuity check of this circuit during each ignition cycle and sets this cod...

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